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Biology for Kids

Organs

What is an organ?

An organ is a group of tissues in a living organism that has a specific form and function.

Organ Systems

Organs are grouped together into organ systems. Organ systems perform a specific task. In most animals there are ten major organ systems: Do plants have organs?

Yes, all complex living organisms have some types of organs. The three major organ systems in plants include roots, stems, and leaves. You can go to this page to learn more about the major structures of plants.

Major Organs in the Human Body

As you can see from the long list of organ systems, the human body has a large number of organs that somehow all work together to keep us alive. Here is a list and short description of a few of the major organs. Interesting Facts about Organs

More Biology Subjects

Cell
The Cell
Cell Cycle and Division
Nucleus
Ribosomes
Mitochondria
Chloroplasts
Proteins
Enzymes

The Human Body
Brain
Nervous System
Digestive System
Sight and the Eye
Hearing and the Ear
Smelling and Tasting
Skin
Muscles
Breathing
Blood and Heart
Bones
List of Human Bones
Immune System
Organs

Nutrition
Nutrition
Vitamins and Minerals
Carbohydrates
Lipids
Enzymes

Genetics
Chromosomes
DNA
Mendel and Heredity
Hereditary Patterns
Proteins and Amino Acids

Plants
Photosynthesis
Plant Structure
Plant Defenses
Flowering Plants
Non-Flowering Plants
Trees
Living Organisms
Scientific Classification
Animals
Bacteria
Protists
Fungi
Viruses

Disease
Infectious Disease
Medicine and Pharmaceutical Drugs
Epidemics and Pandemics
Historical Epidemics and Pandemics
Immune System
Cancer
Concussions
Diabetes
Influenza


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